A 750 version s_left s_right t_bottom t_top 0 6 0 196 // comment: IAS 100 6 12 0 196 // comment: IAS 10 12 18 3 115 // comment: IAS 1 10 // comment: knots per tickmark (small) 0 // comment: knots per tickmark (big) 20 // comment: knots per label 1.0 // comment: pixels per knot